2005 January: Atrazine 0.01ug/L
2005 April: Atrazine 0.02ug/L
2005 August: Trace
2005 October: Trace
2005 November: Endosulfan 0.002ug/L (TRIMPS), Atrazine Trace
2005 December: Atrazine 0.025ug/L
2006 January: Atrazine 0.04ug/L
2006 February: Atrazine 0.041ug/L
2006 March: Atrazine 0.04ug/L
2006 April: Atrazine 0.042ug/L